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What causes a breast lymph node to swell?

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Dr. Michael Miller
Wound care

In brief: Monitoring Centers

The lymphatic system absorbs and carries things too big to go into the arteries and veins like bacteria eaten by white cells and digested food.
A lymph node "tastes" the lymph to see if anything bad is there like bacteria, viruses, cancers, etc. When it detects a problem, it alerts the immune system and enlarges in response to the inflammation they create when they react. You can feel them then.

In brief: Monitoring Centers

The lymphatic system absorbs and carries things too big to go into the arteries and veins like bacteria eaten by white cells and digested food.
A lymph node "tastes" the lymph to see if anything bad is there like bacteria, viruses, cancers, etc. When it detects a problem, it alerts the immune system and enlarges in response to the inflammation they create when they react. You can feel them then.
Dr. Michael Miller
Dr. Michael Miller
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